Automatic dredging device and method for river channel

Abstract

The invention relates to the technical field of hydraulic engineering equipment, and discloses an automatic river channel dredging device which comprises a blow-off pipe, a connecting valve is fixedly connected to the outer wall of the blow-off pipe, a suction pump is fixedly connected to the outer wall of the end, close to the connecting valve, of the blow-off pipe, and a supporting mechanism is arranged at the end, away from the suction pump, of the blow-off pipe. The supporting mechanism comprises a supporting frame fixedly connected with the blow-off pipe, in the execution process of the river channel sludge cleaning task, the water inlet pipe injects water into the cabin initially, the diving box sinks gradually, after the diving box reaches the position near sludge, the suction pump is started immediately, negative pressure is formed in the blow-off pipe and the cleaning pipe, and the blow-off pipe is driven to blow off the sludge. Sludge is discharged into the blow-off pipe through the cleaning pipe and the connecting pipe in sequence from the silt suction opening in the bottom of the diving box, and finally is pumped out from the bottom of the river channel and discharged to the suction-type sewer scavenger connected with the blow-off pipe, so that the silt cleaning work can be continuously carried out under the condition that the work does not need to be interrupted, and the working efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy engineering equipment, and in particular to an automatic river channel dredging device and a method thereof. Background Art

[0002] In modern society, rivers have multiple functions such as flood control, water supply, shipping, and ecology. However, as time goes by, silt continues to accumulate in rivers. On the one hand, silt will reduce the river's flood-carrying capacity and easily cause flood disasters during the rainy season; on the other hand, it will pollute the water body and destroy the water ecological balance. Traditional dredging methods are inefficient, costly, and easily cause significant disturbances to the river ecology.

[0003] The patent application with application number CN202110640003.1 discloses an environmentally friendly dredging device for water conservancy projects, including a dredging hull, a controller and dredging units arranged on both sides of the dredging hull; a power mechanism is arranged on the rear side of the dredging hull; the dredging unit includes: a dredging cylinder for collecting silt in the river channel; an angle adjustment module, connected to one side of the dredging cylinder, for adjusting the angle of the dredging cylinder; a height adjustment module, connected to the angle adjustment module, for adjusting the height of the angle adjustment module and the dredging cylinder.

[0004] To sum up, when using a dredging vessel to carry out dredging work, due to the limitation of the volume of the dredging barrel, after a period of dredging operation, it is necessary to go ashore to clean the dredging barrel. In this way, the dredging work will be forced to be interrupted, which will greatly reduce the overall work efficiency.

[0005] To this end, we proposed a river channel automated dredging device and method. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a river channel automatic dredging device and method thereof to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: an automatic river channel dredging device, comprising a sewage pipe, the outer wall of which is fixedly connected to a connecting valve, the outer wall of one end of the sewage pipe close to the connecting valve is fixedly connected to a suction pump, and the end of the sewage pipe away from the suction pump is provided with a supporting mechanism, the supporting mechanism comprises a supporting frame fixedly connected to the sewage pipe, the sewage pipe runs through the supporting frame and is fixedly connected to a connecting pipe, and further comprises: The cleaning mechanism comprises a cleaning pipe fixedly connected to the connecting pipe, the outer surface of the cleaning pipe away from the connecting pipe is fixedly connected to a diving box, the bottom of the diving box is provided with a silt suction port, one end of the diving box close to the silt suction port is fixedly connected to a drain pipe, the top outer surface of the diving box is fixedly connected to a water inlet pipe, the outer surface of the cleaning pipe is fixedly sleeved with a connecting frame, the bottom of the connecting frame is fixedly connected to the diving box, the end of the connecting frame away from the cleaning pipe is fixedly connected to the water inlet pipe, the end of the connecting frame close to the water inlet pipe is fixedly connected to a control valve, the outer surface of the diving box is provided with a groove, the inner wall of the diving box is fixedly connected with a partition, the inner wall of the diving box is provided with a cabin, the outside of the diving box is provided with an auxiliary component, the silt suction port discharges the silt around the bottom of the diving box to the connecting pipe with the help of the cleaning pipe, the water inlet pipe injects water into the cabin to realize the sinking of the diving box, and the control valve is used to regulate the water inflow and water inflow speed of the water inlet pipe.

[0008] According to the above technical solution, the bottom outer wall of the diving box is rotatably connected to a rotating rod via a rotating shaft, the outer surface of the rotating rod is fixedly connected to a fixed block, the outer wall of one end of the rotating rod away from the fixed block is fixedly connected to an elastic component, the end of the elastic component away from the rotating rod is fixedly connected to the diving box, the rotating rod scrapes the sludge toward the sludge suction port, and the elastic component is used to reset the rotating rod.

[0009] According to the above technical solution, the auxiliary component includes a rotating frame slidably connected to the submersible box, the inner wall of the rotating frame is fixedly connected to a motor, the output end of the motor is fixedly connected to a driving wheel, the bottom of the rotating frame is fixedly connected to a fixed rod, and the outer wall of the fixed rod close to the rotating frame is fixedly connected to a dredging plate, which is used to scrape the silt toward the fixed rod.

[0010] According to the above technical solution, the inner wall of the fixed rod is rotatably connected to the flip block via a rotating shaft, the outer wall of the flip block is fixedly connected to the second fixed shaft, the end of the second fixed shaft away from the flip block passes through the fixed rod and is fixedly connected to the second spring, the second spring is used for resetting the flip block, and the flip block is used to assist in resetting the rotating rod.

[0011] According to the above technical solution, an airbag is fixedly connected to the inner wall of the support frame, a fixing frame is fixedly connected to the interior of the support frame, the inner wall of the fixing frame is fixedly connected to the sewage pipe, an end of the support frame away from the sewage pipe is fixedly connected to a first connecting rod, an end of the first connecting rod away from the support frame is fixedly connected to a first protrusion on the inner wall, the support frame floats on the water surface through the airbag, and the fixing frame fixes the sewage pipe.

[0012] According to the above technical solution, a force block is provided at one end of the support frame close to the first protrusion, the inner wall of the force block is fixedly connected to the sewage pipe, the outer wall of the force block close to the support frame is fixedly connected to a first fixed shaft, the end of the first fixed shaft away from the force block passes through the support frame and is fixedly connected to a first spring, the end of the first spring close to the force block is fixedly connected to the support frame, the first spring is used for resetting the force block, and the first fixed shaft is used to improve the stability of the force block when it moves.

[0013] According to the above technical solution, a second connecting rod is fixedly connected to the outer surface of the force-bearing block, a second protrusion is fixedly connected to the outer wall of the second connecting rod, and a limiting block is fixedly connected to the inner wall of one end of the second connecting rod away from the force-bearing block. When the second connecting rod contacts the first protrusion through the second protrusion, the force-bearing block vibrates.

[0014] A method for automatic river channel dredging comprises the following steps: S1. When cleaning the river silt, the support frame is pushed and placed in the predetermined silt cleaning area of ​​the river, and the support frame is suspended above the water surface by the buoyancy provided by the airbag; S2. The water inlet pipe first fills the cabin with water. As the amount of water increases, the gravity on the diving box gradually becomes greater than its buoyancy, and the box begins to sink. It continues to sink until it approaches the muddy area at the bottom of the river. S3. After the suction pump is turned on, a negative pressure environment is created inside the sewage pipe and the cleaning pipe. Under the action of this negative pressure, the sludge near the sludge suction port at the bottom of the submersible tank is transported to the connecting pipe along the cleaning pipe in turn, and then flows into the sewage pipe through the connecting pipe, and the sludge is discharged from the sewage pipe.

[0015] Compared with the prior art, the present invention provides an automatic river channel dredging device, which has the following beneficial effects: 1. The present invention provides an automatic river channel silt clearing device. During the execution of the task of clearing silt from the river channel, the water inlet pipe will initially inject water into the cabin to gradually sink the submersible box. When the submersible box reaches the vicinity of the silt, the suction pump will start immediately, causing negative pressure to form inside the sewage pipe and the cleaning pipe. The silt is then discharged from the silt suction port at the bottom of the submersible box through the cleaning pipe and the connecting pipe into the sewage pipe in sequence, and is finally pumped out from the bottom of the river channel and discharged to a sewage suction truck connected to the sewage pipe. In this way, the silt clearing work can be continuously carried out without interrupting the operation, thereby effectively improving the work efficiency.

[0016] 2. The present invention sets a supporting mechanism. During the sludge extraction operation in the sewage pipe, the flow velocity and flow direction at the bend of the sewage pipe change, so that the bend of the sewage pipe is prone to vibration. The force block absorbs and buffers the vibration at the bend of the sewage pipe through the first spring, effectively reducing the negative effects of the vibration on the related components connected to the sewage pipe.

[0017] 3. The present invention sets a force-bearing block and a second connecting rod. When the sewage pipe carries out sludge extraction work, it will form pressure on the force-bearing block. Under the action of the pressure, the force-bearing block squeezes the first spring. At the same time, the second connecting rod fixed on the outer wall of the force-bearing block will slide on the inner wall of the first connecting rod. The second convex point of the second connecting rod touches the first convex point, and the force-bearing block will vibrate, which is beneficial to reduce the risk of sludge clogging at the bend of the sewage pipe.

[0018] 4. The present invention is provided with a cleaning mechanism. The motor drives the rotating frame to slide along the outer surface of the diving box through the driving wheel. The rotating frame scrapes the sludge toward the fixed rod through the silt cleaning plate. During this process, the fixed rod will squeeze the fixed block fixedly connected to the outer wall of the rotating rod, causing the rotating rod to flip toward the silt suction port. When the rotating rod flips, the silt on the inner wall of the fixed rod can be scraped to the silt suction port, effectively improving the silt extraction efficiency of the silt suction port. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall front structure of the present invention; Figure 2 It is a schematic diagram of the overall front cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the support mechanism structure of the present invention; Figure 4 It is a schematic diagram of the structure of the fixing frame and the force bearing block of the present invention; Figure 5 For the present invention Figure 2 A is a schematic diagram of the enlarged structure of the middle part; Figure 6 It is a schematic diagram of the cleaning mechanism structure of the present invention; Figure 7 It is a schematic diagram of the bottom structure of the cleaning mechanism of the present invention; Figure 8 It is a schematic diagram of the structure of the diving box of the present invention; Fig. 9 It is a schematic diagram of the auxiliary component structure of the present invention; Fig.10 For the present invention Figure 7 Schematic diagram of the enlarged structure of B.

[0020] In the figure: 1, sewage pipe; 2, connecting valve; 3, suction pump; 4, supporting mechanism; 401, supporting frame; 402, air bag; 403, fixing frame; 404, first connecting rod; 405, first convex point; 406, force block; 407, first fixed shaft; 408, first spring; 409, second connecting rod; 410, second convex point; 411, limit block; 5, connecting pipe; 6, cleaning mechanism; 601, diving box; 602, groove; 603, cleaning pipe; 6 ...04, second connecting rod; 610, second convex point; 611, limit block; 612, first connecting rod; 613, second connecting rod; 614, second connecting rod; 615, second connecting rod; 616, second connecting rod; 617, second connecting rod; 618, second connecting rod; 619, second connecting rod; 620, second connecting rod; 621, second connecting rod; 622, second connecting rod; 623, second connecting rod; 624, second connecting rod; 625, second connecting rod; 626, second connecting rod; 04, connecting frame; 605, water inlet pipe; 606, control valve; 607, silt suction port; 608, drainage pipe; 609, rotating rod; 610, fixed block; 611, elastic component; 612, auxiliary component; 6121, rotating frame; 6122, motor; 6123, driving wheel; 6124, fixed rod; 6125, silt removal plate; 6126, flip block; 6127, second fixed shaft; 6128, second spring; 613, partition; 614, cabin. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Example 1: See Figure 1-Figure 5 The present invention provides a technical solution: an automatic river channel silting device, including a sewage pipe 1, a connecting valve 2 is fixedly connected to the outer wall of the sewage pipe 1, a suction pump 3 is fixedly connected to the outer wall of one end of the sewage pipe 1 close to the connecting valve 2, and a support mechanism 4 is arranged at one end of the sewage pipe 1 away from the suction pump 3. The support mechanism 4 includes a support frame 401 fixedly connected to the sewage pipe 1, the sewage pipe 1 runs through the support frame 401 and is fixedly connected to a connecting pipe 5, and also includes: The cleaning mechanism 6 comprises a cleaning pipe 603 fixedly connected to the connecting pipe 5, the outer surface of the cleaning pipe 603 away from the connecting pipe 5 is fixedly connected to a diving box 601, a silt suction port 607 is provided at the bottom of the diving box 601, one end of the diving box 601 close to the silt suction port 607 is fixedly connected to a drain pipe 608, a water inlet pipe 605 is fixedly connected to the top outer surface of the diving box 601, a connecting frame 604 is fixedly sleeved on the outer surface of the cleaning pipe 603, the bottom of the connecting frame 604 is fixedly connected to the diving box 601, one end of the connecting frame 604 away from the cleaning pipe 603 is fixedly connected to the water inlet pipe 605, and one end of the connecting frame 604 close to the water inlet pipe 605 is fixedly connected to a control valve 606, a groove 602 is provided on the outer surface of the diving box 601, a partition 613 is fixedly connected to the inner wall of the diving box 601, and the cabin 614 is divided into two parts by the partition 613 The two parts of the submersible tank 601 are divided into two parts, and different amounts of water are injected into the two parts of the cabin 614 by means of the water inlet pipes 605 respectively located on both sides. Due to the gravity imbalance caused by the difference in the amount of water on both sides, the submersible tank 601 will be deflected at an angle, thereby changing its posture and position in the water. The inner wall of the submersible tank 601 is provided with a cabin 614, and the outside of the submersible tank 601 is provided with an auxiliary component 612. In the river silt cleaning operation, the water inlet pipe 605 first injects water into the cabin 614 to cause the submersible tank 601 to sink. When the submersible tank 601 sinks near the silt, the suction pump 3 is started to generate negative pressure in the sewage pipe 1 and the cleaning pipe 603, so that the silt is discharged from the silt suction port 607 at the bottom of the submersible tank 601 through the cleaning pipe 603 to the connecting pipe 5, and then discharged into the sewage pipe 1 from the connecting pipe 5. Finally, the silt is pumped out from the bottom of the river through the sewage pipe 1 to complete the silt cleaning process.

[0025] An airbag 402 is fixedly connected to the inner wall of the support frame 401, a fixing frame 403 is fixedly connected to the interior of the support frame 401, the inner wall of the fixing frame 403 is fixedly connected to the sewage pipe 1, a first connecting rod 404 is fixedly connected to the end of the support frame 401 away from the sewage pipe 1, a first protrusion 405 is fixedly connected to the inner wall of the end of the first connecting rod 404 away from the support frame 401, the support frame 401 floats on the water surface with the help of the buoyancy of the airbag 402, and it is fixed to the bottom of the fixing frame 403, and the fixing frame 403 is used to achieve stable support and positioning of the sewage pipe 1, ensuring the stable position of the sewage pipe 1 on the water surface.

[0026] A force block 406 is provided at one end of the support frame 401 close to the first protrusion 405, and the inner wall of the force block 406 is fixedly connected to the sewage pipe 1. A first fixed shaft 407 is fixedly connected to the outer wall of the force block 406 on one side close to the support frame 401. The end of the first fixed shaft 407 away from the force block 406 passes through the support frame 401 and is fixedly connected to a first spring 408. The end of the first spring 408 close to the force block 406 is fixedly connected to the support frame 401. In the process of extracting sludge from the sewage pipe 1, the flow velocity and flow direction at the bend of the sewage pipe 1 change, causing vibration in this part. At this time, the force block 406 absorbs and buffers the vibration at the bend of the sewage pipe 1 with the help of the elastic action of the first spring 408, thereby reducing the adverse effects of vibration on the overall structure of the sewage pipe 1 and related connecting components.

[0027] A second connecting rod 409 is fixedly connected to the outer surface of the force block 406, and a second protrusion 410 is fixedly connected to the outer wall of the second connecting rod 409. A limiting block 411 is fixedly connected to the inner wall of one end of the second connecting rod 409 away from the force block 406. When the sewage pipe 1 extracts sludge, the sewage pipe 1 applies pressure to the force block 406, so that the force block 406 squeezes the first spring 408. During this process, the second connecting rod 409 fixed to the outer wall of the force block 406 will slide on the inner wall of the first connecting rod 404. When the second protrusion 410 of the second connecting rod 409 contacts the first protrusion 405, the force block 406 will vibrate.

[0028] Example 2: Please refer to Figure 6-Figure 10 On the basis of the first embodiment, the present invention provides a technical solution: the auxiliary component 612 includes a rotating frame 6121 slidably connected to the diving box 601, the inner wall of the rotating frame 6121 is fixedly connected with a motor 6122, the output end of the motor 6122 is fixedly connected with a driving wheel 6123, the bottom of the rotating frame 6121 is fixedly connected with a fixing rod 6124, and the outer wall of the fixing rod 6124 close to the rotating frame 6121 is fixedly connected with a dredging plate 6125. The motor 6122 rolls on the inner wall of the groove 602 through the driving wheel 6123, driving the rotating frame 6121 to slide along the outer surface of the diving box 601, and the rotating frame 6121 then scrapes the silt toward the fixed rod 6124 with the help of the dredging plate 6125, thereby realizing the cleaning action of the silt on the outer surface of the diving box 601.

[0029] The inner wall of the fixed rod 6124 is rotatably connected to the flip block 6126 via a rotating shaft, the outer wall of the flip block 6126 is fixedly connected to the second fixed shaft 6127, the end of the second fixed shaft 6127 away from the flip block 6126 passes through the fixed rod 6124 and is fixedly connected to the second spring 6128, the second spring 6128 is used for resetting the flip block 6126, the bottom outer wall of the diving box 601 is rotatably connected to the rotating rod 609 via a rotating shaft, the outer surface of the rotating rod 609 is fixedly connected to the fixed block 610, the outer wall of the end of the rotating rod 609 away from the fixed block 610 is fixedly connected to the elastic component 611, the elastic component 611 is away from the rotating rod 609 The end is fixedly connected to the diving box 601. During the rotation of the rotating frame 6121, it uses the fixed rod 6124 to squeeze the fixed block 610 fixedly connected to the outer wall of the rotating rod 609, so that the rotating rod 609 is flipped toward the silt suction port 607. When the rotating rod 609 is flipped, the silt on the inner wall of the fixed rod 6124 will be scraped toward the silt suction port 607. After the rotating rod 609 completes the flipping operation, the flipping block 6126 of the fixed rod 6124 contacts the outer surface of the fixed block 610. At this time, the rotating rod 609 is restored to its initial position under the joint action of the flipping block 6126 and the elastic component 611, thereby preparing for the next round of silt cleaning operations.

[0030] A method for automatic river channel dredging comprises the following steps: S1. When cleaning the river silt, the support frame 401 is pushed and placed in the predetermined silt cleaning area of ​​the river, and the support frame 401 is suspended above the water surface by the buoyancy provided by the airbag 402; S2, the water inlet pipe 605 first injects water into the chamber 614. As the amount of water increases, the gravity on the submersible box 601 gradually becomes greater than its buoyancy, and the submersible box 601 begins to sink, and continues to sink until it approaches the muddy area at the bottom of the river; S3, after the suction pump 3 is turned on, a negative pressure environment is created inside the sewage pipe 1 and the cleaning pipe 603. Under the action of this negative pressure, the sludge near the sludge suction port 607 at the bottom of the diving box 601 is transported to the connecting pipe 5 along the cleaning pipe 603 in turn, and then flows into the sewage pipe 1 through the connecting pipe 5, and the sludge is discharged from the sewage pipe 1.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic river channel dredging device, comprising a sewage pipe (1), the outer wall of the sewage pipe (1) being fixedly connected to a connecting valve (2), the outer wall of one end of the sewage pipe (1) close to the connecting valve (2) being fixedly connected to a suction pump (3), the end of the sewage pipe (1) away from the suction pump (3) being provided with a supporting mechanism (4), the supporting mechanism (4) comprising a supporting frame (401) fixedly connected to the sewage pipe (1), the sewage pipe (1) passing through the supporting frame (401) and being fixedly connected to a connecting pipe (5), characterized in that: Also included are: The cleaning mechanism (6) comprises a cleaning pipe (603) fixedly connected to the connecting pipe (5); the outer surface of the cleaning pipe (603) away from the connecting pipe (5) is fixedly connected to a diving box (601); a silt suction port (607) is provided at the bottom of the diving box (601); an end of the diving box (601) close to the silt suction port (607) is fixedly connected to a drainage pipe (608); the top outer surface of the diving box (601) is fixedly connected to a water inlet pipe (605); the outer surface of the cleaning pipe (603) is fixedly sleeved with a connecting frame (604); the bottom of the connecting frame (604) is fixedly connected to the diving box (601); and the end of the connecting frame (604) away from the cleaning pipe (603) is fixedly connected to the water inlet pipe (605). The submersible box (601) is fixedly connected to a control valve (606) at one end of the connection frame (604) close to the water inlet pipe (605); a groove (602) is provided on the outer surface of the submersible box (601); a partition (613) is fixedly connected to the inner wall of the submersible box (601); a cabin (614) is provided on the inner wall of the submersible box (601); an auxiliary component (612) is provided on the outside of the submersible box (601); a silt suction port (607) discharges silt around the bottom of the submersible box (601) to the connection pipe (5) by means of a cleaning pipe (603); the water inlet pipe (605) injects water into the cabin (614) to achieve the sinking of the submersible box (601); and the control valve (606) is used to adjust the water inflow and water inflow speed of the water inlet pipe (605).

2. The automatic river channel dredging device according to claim 1, characterized in that: The outer wall of the bottom of the diving box (601) is rotatably connected to a rotating rod (609) via a rotating shaft; the outer surface of the rotating rod (609) is fixedly connected to a fixing block (610); the outer wall of one end of the rotating rod (609) away from the fixing block (610) is fixedly connected to an elastic component (611); one end of the elastic component (611) away from the rotating rod (609) is fixedly connected to the diving box (601); the rotating rod (609) scrapes the sludge towards the sludge suction port (607); and the elastic component (611) is used to reset the rotating rod (609).

3. The automatic river channel dredging device according to claim 1 is characterized in that: The auxiliary component (612) comprises a rotating frame (6121) slidably connected to the diving box (601); a motor (6122) is fixedly connected to the inner wall of the rotating frame (6121); a driving wheel (6123) is fixedly connected to the output end of the motor (6122); a fixing rod (6124) is fixedly connected to the bottom of the rotating frame (6121); a silt removal plate (6125) is fixedly connected to the outer wall of a side of the fixing rod (6124) close to the rotating frame (6121); and the silt removal plate (6125) is used to scrape silt in the direction of the fixing rod (6124).

4. The automatic river channel dredging device according to claim 3 is characterized in that: The inner wall of the fixed rod (6124) is rotatably connected to a flip block (6126) via a rotating shaft, and the outer wall of the flip block (6126) is fixedly connected to a second fixed shaft (6127). One end of the second fixed shaft (6127) away from the flip block (6126) passes through the fixed rod (6124) and is fixedly connected to a second spring (6128). The second spring (6128) is used for resetting the flip block (6126), and the flip block (6126) is used for assisting the resetting of the rotating rod (609).

5. The automatic river channel dredging device according to claim 1, characterized in that: The inner wall of the support frame (401) is fixedly connected to an air bag (402), the interior of the support frame (401) is fixedly connected to a fixing frame (403), the inner wall of the fixing frame (403) is fixedly connected to a sewage pipe (1), one end of the support frame (401) away from the sewage pipe (1) is fixedly connected to a first connecting rod (404), the inner wall of the end of the first connecting rod (404) away from the support frame (401) is fixedly connected to a first protrusion (405), the support frame (401) floats on the water surface via the air bag (402), and the fixing frame (403) fixes the sewage pipe (1).

6. The automatic river channel dredging device according to claim 5, characterized in that: A force-bearing block (406) is arranged at one end of the support frame (401) close to the first protrusion (405); the inner wall of the force-bearing block (406) is fixedly connected to the sewage pipe (1); the outer wall of the force-bearing block (406) close to the support frame (401) is fixedly connected to a first fixed shaft (407); the end of the first fixed shaft (407) away from the force-bearing block (406) passes through the support frame (401) and is fixedly connected to a first spring (408); the end of the first spring (408) close to the force-bearing block (406) is fixedly connected to the support frame (401); the first spring (408) is used for resetting the force-bearing block (406); and the first fixed shaft (407) is used for improving the stability of the force-bearing block (406) when it moves.

7. The automatic river channel dredging device according to claim 6, characterized in that: The outer surface of the force-bearing block (406) is fixedly connected to a second connecting rod (409), the outer wall of the second connecting rod (409) is fixedly connected to a second protrusion (410), the inner wall of one end of the second connecting rod (409) away from the force-bearing block (406) is fixedly connected to a limiting block (411), and when the second connecting rod (409) comes into contact with the first protrusion (405) via the second protrusion (410), the force-bearing block (406) vibrates.

8. A method for automatic river channel dredging, using an automatic river channel dredging device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. When cleaning the river silt, the support frame (401) is moved and placed in a predetermined silt cleaning area of ​​the river, and the support frame (401) is suspended above the water surface by means of the buoyancy provided by the air bag (402); S2. The water inlet pipe (605) first injects water into the chamber (614). As the amount of water increases, the gravity on the diving box (601) gradually becomes greater than its buoyancy, and the diving box (601) begins to sink, and continues to sink until it approaches the muddy area at the bottom of the river; S3. After the suction pump (3) is started, a negative pressure environment is created inside the sewage pipe (1) and the cleaning pipe (603). Under the action of this negative pressure, the sludge located near the sludge suction port (607) at the bottom of the diving box (601) is transported to the connecting pipe (5) along the cleaning pipe (603) in sequence, and then flows into the sewage pipe (1) through the connecting pipe (5), and the sludge is discharged from the sewage pipe (1).

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